Abstract
Conclusions
1. A-C-T caused acute thymic atrophy in normal 21-23-day-old rats. 2. Castration did not prevent thymic atrophy produced with A-C-T. 3. This atrophy was observed in hypophysec-tomized rats although to a lesser degree. 4. A-C-T did not cause thymic atrophy in adrenalectomized rats. 5. It would seem likely that thymic atrophy produced with A-C-T is through the adrenal cortical steroids.
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